Urban cyclists encounter many dangers: Path-clogging pedestrians and reckless drivers are among the most obvious, but bikers also face an under-the-radar road risk called “dooring”—the collision that results when a parked driver opens their car door into an oncoming pedaler’s path.

Most states don’t track dooring accidents, so it’s hard to determine just how often they occur. However, Grid Chicago analyzed Illinois Department of Transportation data from 2011, and found that one in five bike crashes in Chicago were caused by dooring that year.

To prevent dooring accidents, The Telegraph reports that drivers in the Netherlands rely on a simple practice that’s been dubbed the “Dutch Reach”: After parking, they reach for their car door’s handle using their right arm instead of their left one, even though the latter is closer to the door. This method forces the drivers to pivot their bodies so they look over their shoulders, allowing them to notice incoming bikers on the street.

Children in the Netherlands learn this habit from their teachers and parents, and it’s even included on their driving tests. Now, the practice is starting to catch on in the U.S., thanks in part to vocal evangelists like Michael Charney. Charney, a doctor from Cambridge, Massachusetts, founded a website called dutchreach.org after a local woman named Amanda Phillips was killed in a dooring accident. It provides resources about cycling safety, and suggests ways to promote the Dutch Reach. Meanwhile, advocacy groups like the San Francisco Bicycle Coalition are also spreading the word.

Some U.S. cities, like Minneapolis, are starting to build protected paths for bike-loving commuters. But in most places, designated paths for cyclists are situated in a “door zone,” a.k.a. the buffer zone between parked cars and the main road. Until more cities invest in infrastructure changes to keep bikers safe, U.S. drivers can save lives by adjusting their habits.

Master the Dutch Reach by watching the tutorial below, courtesy of Outside magazine.

[h/t The Telegraph]

Antique weapons always draw enthusiastic collectors, often with deep pockets, during sales at the world’s most prestigious auction houses—especially when those weapons belonged to some of history’s most formidable figures. Here are just a handful of historic swords, pistols, and more that made history a second time for their extravagant price tags.

1. F-GRADE A.H. FOX 12 GAUGE // $862,500

Theodore Roosevelt’s Fox shotgun, which he brought along on a 1909 African safari, became the most expensive shotgun ever sold at auction in 2010. That year, the James D. Julia auction house sold the firearm to a private buyer for $862,500—that’s a price tag more than $200,000 higher than any shotgun previously sold.

2. WINCHESTER MODEL 1886 // $1.26 MILLION

As Popular Mechanics reported, a Winchester rifle fetched more than a million dollars at auction for a couple of reasons. For one, it was the very first Winchester model produced that year. But even more importantly, it was gifted to Captain Henry W. Lawton, the man responsible for the tracking and capture of Geronimo.

3. PRESENTATION SWORD // $1.67 MILLION

In 1864, Ulysses S. Grant was presented with a silver and gold diamond-encrusted sword “by the grateful citizens of Kentucky after his assumption as the General in Chief of the United States Army,” according to Heritage Auction Galleries’s curator Dennis Lowe. The sword netted $1,673,000 in a 2007 auction.

4. 19TH CENTURY FLINTLOCK PISTOLS // $1.8 MILLION

These pistols have quite the pedigree. Designed by Nicolas Noël-Boutet, Napoléon’s gunsmith, the Marquis de Lafayette carried them to America, where he befriended George Washington, Alexander Hamilton, and Thomas Jefferson. In 1825, Lafayette presented the guns as gifts to Simón Bolívar, the revolutionary who helped establish South American independence from Spain. In 2015, an anonymous buyer snagged them during an auction at Christie’s for $1.8 million.

5. SADDLE PISTOLS // $1.99 MILLION

Bolívar wasn’t the only comrade Lafayette bestowed fancy weapons on. In 2002, a pair of saddle pistols the French general gave to George Washington sold for a whopping $1,986,000 in an auction at Christie’s. The guns, according to the lot description, feature octagonal-to-round steel barrels with silver-and-gold wire inlay, and a base made from European walnut. Post-auction, the buyer was revealed to be the Richard King Mellon Foundation; the group went on to donate the pistols to Fort Ligonier in Pennsylvania.

6. DAGGER, MUGHAL EMPIRE // $3.3 MILLION

Only a handful of items remain from the reign of Shah Jahan, the fifth Mughal emperor (and the Taj Mahal’s creator). One weapon—a dagger forged in 1629 and inscribed with the emperor’s name, title, and the date and place of its manufacture—sold in 2008 for more than twice the starting bid during an auction at Bonham’s, bringing in a cool £1.7 million (around $3.3 million).

7. NAPOLÉON’S SWORD // $6.5 MILLION

This curved steel blade holds the Guinness World Record for most expensive weapon ever sold at auction, and for good reason: It once belonged to Napoléon Bonaparte, who brought it with him to the Battle of Marengo in 1800. The weapon, which features an ebony and gold handle, sold for $6.5 million during a 2007 auction in Fontainebleu, France.

Anyone who has ever read Jane Austen’s Pride and Prejudice over the past 200 years has surely conjured up his or her own idea of what the curmudgeonly-but-lovable Mr. Fitzwilliam Darcy would look like in real life. Since the 1995 premiere of the BBC’s beloved miniseries based on the book, that image may look a lot like Colin Firth. But a couple of academics and one illustrator are here to dash your dreams.

A group of researchers led by John Sutherland, a professor of Modern English Literature at University College London, and Amanda Vickery, a professor of Early Modern History at Queen Mary University of London, were recently commissioned by Drama TV to dig into Austen’s text (which offers very little description of Darcy), the author’s own romantic relationships (which often inspired her work), and the fashion standards of the time to create the first historically accurate image of one of literature’s most iconic leading men, courtesy of editorial artist and illustrator Nick Hardcastle. Here’s what he looks like…

According to a press release from Drama TV, “The new portraits paint a very different picture of the literary heartthrob when compared to modern day TV depictions, portrayed by Hollywood actors such as Colin Firth, Elliot Cowan, and Matthew Macfadyen.” We’ll say!

According to the team’s research, Mr. Darcy—who would stand just under six feet tall—would have “a long oval face with a small mouth, pointy chin, and long nose.” This pale-complexioned dreamboat would also have “slender sloping shoulders and [a] modest chest” and his hair would be white—and powdered.

“There are only scraps of physical description of Fitzwilliam Darcy to be found in Pride and Prejudice; he is our most mysterious and desirable leading man of all time,” Sutherland explained. “What’s fantastic about Jane Austen’s writing is that Mr. Darcy is both of the era and timeless. Our research for TV channel Drama’s Jane Austen Season shows how Austen herself envisioned Mr. Darcy, however the literature leaves space for the reader’s imagination to create their own Darcy and bring their own fantasies to the storyline.”

“Mr. Darcy is an iconic literary character, renowned for his good looks, charm, and mystery,” added Vickery. “As Austen wrote Pride and Prejudice in the 1790s, our Mr. Darcy portrayal reflects the male physique and common features at the time. Men sported powdered hair, had narrow jaws and muscular, defined legs were considered very attractive. A stark contrast to the chiseled, dark, brooding Colin Firth portrayal we associate the character with today. Drama’s ‘The Real Mr. Darcy’ … reveals that in recent times, Darcy’s character has been sexed up for the modern day audience with a turbo-charged injection of testosterone and steamy romance.”

You can see more of how the project came together in the video below:

[h/t The Cut]

In 2005’s Wedding Crashers, Owen Wilson and Vince Vaughn play John and Jeremy, two divorce mediators who crash weddings to meet women. The romcom/bromance flick also stars Christopher Walken, Rachel McAdams, Isla Fisher, Bradley Cooper, and Will Ferrell in a memorable cameo role. Here are some facts about the movie to read before you get the meatloaf.

1. IT REALLY ALL STARTED WITH A WEDDING INVITATION.

Producer Andrew Panay (Serendipity, Van Wilder: Party Liason) received an invitation to a friend’s wedding, triggering memories of his college days when he and his friend used to crash weddings. Panay developed the concept with his partners at their production company before hiring Steve Faber and Bob Fisher to write the screenplay. Panay met Faber and Fisher when they were shopping their script We’re the Millers (2013). It was the writers that came up with the idea for one of the crashers to fall for a woman at one of the weddings.

2. IT WAS ORIGINALLY WRITTEN TO BE SET IN BOSTON AND CAPE COD.

But producer Peter Abrams knew it would be too cold to shoot in Boston or Cape Cod in March and April, so director David Dobkin (Shanghai Knights) suggested Washington D.C., where he grew up. The director added moments from his earlier days into the movie. “Many times in my youth I sat on the steps of the Lincoln Memorial finishing off a long night with a bottle of champagne or wine as the sun was about to rise over the Washington Monument,” Dobkin reminisced.

3. OWEN WILSON WASN’T COMFORTABLE WITH THE ORIGINAL SCRIPT, SO HE AND VAUGHN CHANGED MOST OF IT.

“When I first read the script, I wasn’t comfortable. It was a funny concept and story, but part felt corny,” the star told New York magazine in 2005. Wilson, Vaughn, and the writers changed the arc of Jeremy’s romance, and got rid of a “Graduate-like” wedding scene with John and Claire (Rachel McAdams).

4. JANE SEYMOUR BEAT OUT RAQUEL WELCH TO PLAY KATHLEEN.

Seymour had auditioned for the first time in 30 years to win the part over the likes of Welch. She said the script was the “funniest thing” she had ever read. Seymour, who was 54 at the time, also took part in her first ever topless scene for the movie.

5. HUNDREDS OF ACTRESSES AUDITIONED BEFORE RACHEL MCADAMS READ FOR CLAIRE.

Dobkin claimed he was one hour from going to the studio to present his top two choices when McAdams arrived in his office. “I was really surprised to get the part because it all happened so fast,” McAdams said.

6. ISLA FISHER WATCHED FATAL ATTRACTION AND THE HAND THAT ROCKS THE CRADLE BEFORE HER AUDITION FOR GLORIA.

It helped her think about how to make someone “really psycho and funny and aggressive and sexual, but also make her sweet enough that you still like her and think that she’s endearing in some way.” She also used a friend’s “crazy eye” and a “really bad” laugh to get the gig.

7. THE FIRST WEEK OF SHOOTING WAS THE OPENING MONTAGE OF ALL THE DIFFERENT WEDDINGS.

All five of them, as principal photography began on March 22, 2004. McAdams’s first scene was dancing with noted mover-shaker Christopher Walken. “My first scene was dancing with Christopher Walken—no pressure, right?” she said. “I had been practicing with a choreographer during pre-production because I knew he was a really good dancer, but it was so nerve-racking on the day because I assumed there would be a whole bunch of people dancing and it turned out to be a whole ballroom full of people watching us dance the polka. I did encourage him to do some solo work and he broke out a few times, which made it a lot of fun for me.”

8. A WEDDING CONSULTANT WAS HIRED FOR AUTHENTICITY.

Wedding planner Lovelynn Vanderhorst was hired as a technical advisor to ensure accuracy. She admitted in the movie’s official production notes how hard it was to stop people from crashing real weddings. “The hard part for me is usually a client will say, ‘I don’t know who that person is, can you go find out?’ Usually they’re not invited and I have to ask them to leave. But at one wedding, it ended up being the groom’s uncle and the bride was really embarrassed. That’s why, I hate to admit it, but it wouldn’t be as hard as you think to crash a wedding.”

9. OWEN WILSON CAME UP WITH THE ’10 PERCENT OF OUR HEARTS’ LINE.

“You know how they say we only use 10 percent of our brains? I think we only use 10 percent of our hearts” came to Wilson after the whole sequence was finished. “At about the same age as I was interested in petrified wood, I was just fascinated with this dumb idea that we only used 10 percent of our brains,” Wilson explained about the thought process. “I was always thinking, ‘Man, if I could only use 20…'”. Wilson told Dobkin his idea, and Dobkin made a last-second setup to shoot the scene again.

According to Jane Seymour, Wilson also came up with the idea for her character to call him a “pervert” at the end of her seduction scene. Wilson also added to the two rules mentioned in the original script. “…I noticed over the course of the movie that whenever Vince was on one of his rants, he would throw in rules to support whatever argument he had,” Owen told IGN. “And so I started to figure that out and I started to throw my own rules into the mix. And eventually it got to rule 87: Don’t quote a rule to another. Don’t go throwing rules in another wedding crasher’s face.”

10. MCADAMS LISTENED TO FLEETWOOD MAC BEFORE EMOTIONAL SCENES.

She played “Landslide” on her iPod to prepare. Wilson and Vaughn heard and sang it, straight-faced, before Jeremy and Gloria’s wedding scene. McAdams said, “It totally took me out! But whatever works.”

11. THEY MADE FAKE PURPLE HEARTS AVAILABLE FOR PRINTING ON THE OFFICIAL WEBSITE.

After some complaints from a congressman, producers took it down. “If any movie-goers take the advice of the ‘Wedding Crashers’ and try to use fake Purple Hearts to get girls, they may wind up picking up an FBI agent instead,” said Rep. John Salazar, D-Colorado.

12. JOHN MCCAIN GOT IN TROUBLE FOR HIS BRIEF CAMEO.

McCain and James Carville appeared briefly in the first Cleary wedding. He donated the $695 salary to charity, and his aides claimed he had “little idea” of what the film would be like when he agreed to make his cameo. McCain, who was awarded an actual Purple Heart, didn’t comment on the Purple Heart controversy, but commented on the criticism he got for appearing in an R-rated film after earlier hosting congressional hearings that criticized Hollywood for marketing R-rated movies to kids. “In Washington, I work with boobs every day,” the senator joked on The Tonight Show with Jay Leno.

13. IT CHANGED BRADLEY COOPER’S CAREER.

Cooper (Sack) said as much on his Inside the Actors Studio appearance. “On Alias, I played the nicest guy in the world and then I would try to audition for movies after that and the feedback was like ‘Wow, Bradley’s such a nice guy,’ ‘Yeah, I don’t really see him in that part,’ and after Wedding Crashers, ‘Bradley? Yeah, he’s an a**hole.’”

14. NO, VINCE VAUGHN DOESN’T HAVE THAT PAINTING OF JEREMY MADE BY TODD.

“I’m not sure where that painting is. But it will always be in my heart,” Vaughn wrote in a Reddit AMA in 2013, despite it being claimed elsewhere on the internet that Vaughn had kept it. He also said the running gag of his character getting referred to as “baba ghanoush” stemmed from an inside joke.

15. THERE WAS BRIEF TALK OF A SEQUEL.

Vaughn, Wilson, and David Dobkin came up with an idea where John and Jeremy would compete with an “ultimate wedding crasher” played by Daniel Craig. But nothing came of it. “Wedding Crashers came out at a time when people weren’t doing lots of sequels,” Dobkin explained.

Sitting quietly at a desk may be the preferred behavior for elementary-school students, but that doesn’t mean it’s the best way for them to learn. Researchers in Denmark have found that integrating whole-body movement into math lessons can significantly boost kids’ test scores. They published their research in the journal Frontiers of Human Neuroscience. 

We all know that being active is good for our whole bodies. Recent studies have shown that those benefits reach all the way into the brain for both adults and kids. Intense exertion—the kind that gets your heart rate up—may improve alertness, and is linked to improved motor skills, sharper thinking, and better grades.

So we know that exercise can boost our brainpower. But can it help us learn? To find out, health scientists at the University of Copenhagen created a movement-centric, six-week math curriculum for elementary students. They recruited 165 pupils, all around the age of 7, and divided them into three groups. Some classes were given math lessons three times a week that required them to use their whole bodies (gross motor skills). They jumped, skipped, and crawled around the classroom, all while solving math problems.

Classes in the second group were sedentary but added fine motor skill activities to their lessons—that is, the students were asked to use LEGO bricks to help them solve math problems. 

Kids in the third group, the control group, had their normal math instruction.

All the students were given standardized math tests before, immediately after, and eight weeks after the experiment. (Standardized test scores are not necessarily the best way to measure kids’ understanding, but they do provide a quantitative baseline by which to gauge improvement over the course of an experiment.) 

Over the course of the six-week study, all three groups’ scores improved, but there was a clear winner. Kids in the crawling-skipping-jumping group saw the biggest boost in their scores, improving twice as much as students in the LEGO classes. The upswing in the gross motor skills group’s test scores was modest—about 7.6 percent—but still significant.

“We need to keep this in mind when developing new forms of instruction,” lead author Jacob Wienecke said in a statement.

Unfortunately, the score bump was not universal. Kids who struggled with math at the beginning of the study were still struggling afterward.

“Individual understanding must be taken into account,” Wienecke said. “Otherwise, we risk an unfortunate combined outcome in which those who are already proficient advance, and those who have not yet mastered concepts cannot keep up.” 

Since Google Maps first debuted on February 8, 2005, users have been able to explore far-off locations without ever leaving their computers. To celebrate the 12-year anniversary of the service, filmmaker Matteo Archondis uploaded a hyperlapse video created with 3305 Google Maps screenshots taken around the world.

In this video spotted by Sploid, viewers pay visits to Rome, Verona, Venice, Paris, London, Barcelona, Rio de Janeiro, San Francisco, the Grand Canyon, Mount Rushmore, New York, Greenland, Mount Everest, and Kyoto. Each location transitions seamlessly into the next, thanks to the sheer amount of stills Archondis used. It took him two days to capture the screen grabs, and two weeks of post-production to create the smooth time-lapse effect. You can check out the result below—no passport required.

[h/t Sploid]